Solar cell assembly and electric generating device
A technology of solar cells and devices, applied in battery circuit devices, circuit devices, energy conversion devices, etc.
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no. 1 example
[0023] FIG. 1 is a block diagram explaining the structure of a photovoltaic power generation device using a plurality of AC modules; FIG. 2 is an external view of the photovoltaic power generation device.
[0024] The distribution line consists of two transmission lines U and V and a neutral line O. The U-phase and V-phase are AC 100V respectively, and these distribution lines constitute a 200V single-phase three-wire transmission line. Therefore, each AC component 1 has a single-phase output of 100V. As shown in Figures 1 and 2, the output connectors of the AC modules 1 are used to connect the input connectors, so that the number of parallel AC modules can be increased. 1 and 2 show an example in which five AC components 1 are connected to each of the U phase and the V phase (10 AC components 1 in total).
[0025] An associated system protector 31 including a switch and a system abnormality detector is provided between the AC component 1 and the industrial power system (her...
no. 2 example
[0050] A photovoltaic power generation device according to a second embodiment of the present invention will be described below. Note: In the second embodiment, the same configurations as those of the first embodiment are assigned the same reference numerals and their detailed descriptions are omitted.
[0051] In the first embodiment, when the detection value of the current detector 4 exceeds the set value, the output of the AC component 1 is stopped. On the contrary, according to the second embodiment, the output of the AC component 1 is lowered so that the detection value of the current detector 4 does not exceed the set value.
[0052] Figure 7 is a block diagram showing the structure of the AC assembly 1 according to the second embodiment. Set subtractor 54 to replace image 3 The comparator 26 shown in the AC component 1 structure.
[0053] The subtractor 54 subtracts the set value of the reference current setting circuit 25 from the output value of the current detec...
no. 3 example
[0061] A photovoltaic power generation device according to a third embodiment of the present invention will be described below. Note: In the third embodiment, the same configurations as those of the first embodiment are assigned the same reference numerals and their detailed descriptions are omitted.
[0062] The first and second embodiments employ an AC assembly 1 coupled to a single-phase two-wire system line. The third embodiment employs an AC assembly 1 coupled to a single-phase three-wire system line.
[0063] Figure 9 is a block diagram showing the structure of the AC component 1 connected to the line of the single-phase three-wire system. although Figure 9 shows the structure of supplying power to the U-phase line, but it can also be supplied to Figure 10 The V-phase line shown is powered.
[0064] and image 3 with Figure 7 Unlike the AC assembly 1 shown in , the input connector 51 and the output connector 61 of the AC assembly 1 according to the third embodi...
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